Determine whether this statement is true or false.Diffusion never occurs across a membrane.TrueFalse

True or false? Active transport can only take place across a membrane.

Which of the following is true about diffusion?Multiple choice question.Molecules move against their concentration gradients.Molecules move down their concentration gradients.

Diffusion is the net (overall) movement of particles from an area of high concentration to an area of lower concentration.Question 4Answera.Falseb.True

is a special type of diffusion where only water moves across a partially permeable membrane

1 Assertion (A): Diffusion does not meet high energy requirements of multi-cellular organismsReason (R) : Diffusion is a fast process but occurs at the surface of the body.